package com.itheima.riggie.filter;

import com.alibaba.fastjson.JSON;
import com.itheima.riggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.AntPathMatcher;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;


/*
* 被拦截器代替
* */
/*
@Slf4j
@WebFilter("/*")
//@WebFilter(filterName="filter",urlPatterns="/*")
public class LoginCheckFilter implements Filter {
    //路径匹配器，支持通配符
    public static final AntPathMatcher PATH_MATCHER = new AntPathMatcher();

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request=(HttpServletRequest) servletRequest;
        HttpServletResponse response=(HttpServletResponse) servletRequest;
        //获取本次请求的uri
        String uri = request.getRequestURI();
        log.info("拦截到请求:  {}",uri);
        //定义不需要处理的请求路径
        String[] urls = new String[]{
                "/employee/login",
                "/employee/logout",
                "/backend/**",
                "/front/**"
        };
        boolean check= check(urls,uri);
        //3如果不需要处理直接放行
        if (check){
            log.info("本次请求{}不需要处理",uri);
            filterChain.doFilter(request,response);
            return;
        }
        //4、判断登录状态，如果已登录，则直接放行
        if (request.getSession().getAttribute("employee")!=null){
            log.info("用户已经登录,用户id为: {}",request.getSession().getAttribute("employee"));
            filterChain.doFilter(request,response);
            return;
        }

        log.info("用户未登录");
        response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
        return;


    }

    public boolean check(String[] urls,String requestURI){
        for (String url : urls) {
            // 比较放行的url 与传进来的url是否一致
            boolean match = PATH_MATCHER.match(url, requestURI);
            if(match){
                return true;
            }
        }
        return false;
    }
}
*/
